31639005

素因数分解:

$3^4\times 5^1\times {\mathrm{78121}}^1$

素因数の和:78138

約数の個数: 20

約数和(自身を含む): 56716572

約数和(自身を除く): 25077567

約数列:

[1, 3, 5, 9, 15, 27, 45, 81, 135, 405, 78121, 234363, 390605, 703089, 1171815, 2109267, 3515445, 6327801, 10546335, 31639005]

約数ペア:

[(1, 31639005), (3, 10546335), (5, 6327801), (9, 3515445), (15, 2109267), (27, 1171815), (45, 703089), (81, 390605), (135, 234363), (405, 78121)]